Results 1 to 10 of about 20,447 (217)

The Geminid meteor shower during the ECOMA sounding rocket campaign: specular and head echo radar observations [PDF]

open access: yesAnnales Geophysicae, 2013
The ECOMA (Existence of Charge state Of meteoric smoke particles in the Middle Atmosphere) sounding rocket campaign was conducted during the Geminid meteor shower in December 2010 in order to explore whether there is a change of the properties of ...
G. Stober   +6 more
doaj   +3 more sources

Meteor radar measurements of MLT winds near the equatorial electro jet region over Thumba (8.5° N, 77° E): comparison with TIDI observations [PDF]

open access: yesAnnales Geophysicae, 2011
The All-Sky interferometric meteor (SKYiMET) radar (MR) derived winds in the vicinity of the equatorial electrojet (EEJ) are discussed. As Thumba (8.5° N, 77° E; dip lat.
S. R. John   +4 more
doaj   +3 more sources

Coded continuous wave meteor radar [PDF]

open access: yesAtmospheric Measurement Techniques, 2016
The concept of a coded continuous wave specular meteor radar (SMR) is described. The radar uses a continuously transmitted pseudorandom phase-modulated waveform, which has several advantages compared to conventional pulsed SMRs.
J. Vierinen   +4 more
doaj   +6 more sources

Error analyses of a multistatic meteor radar system to obtain a three-dimensional spatial-resolution distribution [PDF]

open access: yesAtmospheric Measurement Techniques, 2021
In recent years, the concept of multistatic meteor radar systems has attracted the attention of the atmospheric radar community, focusing on the mesosphere and lower thermosphere (MLT) region. Recently, there have been some notable experiments using such
W. Zhong   +13 more
doaj   +1 more source

A VHF Circularly Polarized Turnstile Antenna with Balun for Meteor Radar

open access: yesRemote Sensing, 2023
This paper presents a circularly polarized turnstile antenna for a meteor radar system. The antenna employs a pair of turnstile radiators, a 1:2 power divider and a 90° phase shifter.
Wei Qiao   +4 more
doaj   +1 more source

Distribution Characteristics of Meteor Angle of Arrival in Mohe and Wuhan, China

open access: yesAtmosphere, 2023
Meteor radar is one of the key tools for studying the atmospheric dynamics in the mesosphere and lower thermosphere. The physical parameters obtained by meteor radar inversion can provide important statistical information for research.
Xiaoyong Du   +12 more
doaj   +1 more source

Effect of neutral winds on the creation of non-specular meteor trail echoes [PDF]

open access: yesAnnales Geophysicae, 2021
Non-specular meteor trail echoes are radar reflections from plasma instabilities that are caused by field-aligned irregularities. Meteor simulations are examined to show that these plasma instabilities, and thus the associated meteor trail echo, strongly
F. Galindo, J. Urbina, L. Dyrud
doaj   +1 more source

Influence of Meteor Count on Wind Field Retrieved by All-Sky Meteor Radar

open access: yesAtmosphere, 2023
The all-sky meteor radar is an important means to detect 70–110 km wind fields. Previous studies have shown that the wind field retrieved by all-sky meteor radars is closely related to the meteor count detected by the radar. However, the precision of the
Xiaojing Hao   +5 more
doaj   +1 more source

Resolving the ambiguous direction of arrival of weak meteor radar trail echoes [PDF]

open access: yesAtmospheric Measurement Techniques, 2021
Meteor phenomena cause ionized plasmas that can be roughly divided into two distinctly different regimes: a dense and transient plasma region co-moving with the ablating meteoroid and a trail of diffusing plasma left in the atmosphere and moving with the
D. Kastinen   +4 more
doaj   +1 more source

Meteor radar observations of polar mesospheric summer echoes over Svalbard [PDF]

open access: yesAtmospheric Measurement Techniques, 2021
A 31 MHz meteor radar located in Svalbard was used to observe polar mesospheric echoes (PMSEs) during summer 2020. Data from 19 July were selected for detailed analysis, with a focus on extracting additional information to characterize the atmosphere in ...
J. P. Younger   +6 more
doaj   +1 more source

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